summaryrefslogtreecommitdiffstats
path: root/src/plugins/rdma/rdma.h
blob: 1e2f3d9ea0eb7daf94456acfca0d2934eb916d48 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
/*
 *------------------------------------------------------------------
 * Copyright (c) 2018 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *------------------------------------------------------------------
 */

#ifndef _RDMA_H_
#define _RDMA_H_

#include <infiniband/verbs.h>
#include <vlib/log.h>
#include <vlib/pci/pci.h>
#include <vnet/interface.h>
#include <vnet/ethernet/mac_address.h>
#include <rdma/rdma_mlx5dv.h>

#define foreach_rdma_device_flags \
  _(0, ERROR, "error") \
  _(1, ADMIN_UP, "admin-up") \
  _(2, LINK_UP, "link-up") \
  _(3, PROMISC, "promiscuous") \
  _(4, MLX5DV, "mlx5dv")

enum
{
#define _(a, b, c) RDMA_DEVICE_F_##b = (1 << a),
  foreach_rdma_device_flags
#undef _
};

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  struct ibv_cq *cq;
  struct ibv_wq *wq;
  u32 *bufs;
  u32 size;
  u32 head;
  u32 tail;
  u32 cq_ci;
  u16 log2_cq_size;
  u16 n_mini_cqes;
  u16 n_mini_cqes_left;
  u16 last_cqe_flags;
  mlx5dv_cqe_t *cqes;
  mlx5dv_rwq_t *wqes;
  volatile u32 *wq_db;
  volatile u32 *cq_db;
  u32 cqn;
  u32 wqe_cnt;
  u32 wq_stride;
} rdma_rxq_t;

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  clib_spinlock_t lock;
  struct ibv_cq *cq;
  struct ibv_qp *qp;
  u32 *bufs;
  u32 size;
  u32 head;
  u32 tail;
} rdma_txq_t;

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);

  /* following fields are accessed in datapath */
  rdma_rxq_t *rxqs;
  rdma_txq_t *txqs;
  u32 flags;
  u32 per_interface_next_index;
  u32 sw_if_index;
  u32 hw_if_index;
  u32 lkey;			/* cache of mr->lkey */
  u8 pool;			/* buffer pool index */

  /* fields below are not accessed in datapath */
  vlib_pci_device_info_t *pci;
  u8 *name;
  u8 *linux_ifname;
  mac_address_t hwaddr;
  u32 async_event_clib_file_index;
  u32 dev_instance;

  struct ibv_context *ctx;
  struct ibv_pd *pd;
  struct ibv_mr *mr;
  struct ibv_qp *rx_qp;
  struct ibv_rwq_ind_table *rx_rwq_ind_tbl;
  struct ibv_flow *flow_ucast;
  struct ibv_flow *flow_mcast;

  clib_error_t *error;
} rdma_device_t;

typedef struct
{
  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
  union
  {
    u16 cqe_flags[VLIB_FRAME_SIZE];
    u16x8 cqe_flags8[VLIB_FRAME_SIZE / 8];
    u16x16 cqe_flags16[VLIB_FRAME_SIZE / 16];
  };
  vlib_buffer_t buffer_template;
} rdma_per_thread_data_t;

typedef struct
{
  rdma_per_thread_data_t *per_thread_data;
  rdma_device_t *devices;
  vlib_log_class_t log_class;
  u16 msg_id_base;
} rdma_main_t;

extern rdma_main_t rdma_main;

typedef enum
{
  RDMA_MODE_AUTO = 0,
  RDMA_MODE_IBV,
  RDMA_MODE_DV,
} rdma_mode_t;

typedef struct
{
  u8 *ifname;
  u8 *name;
  u32 rxq_size;
  u32 txq_size;
  u32 rxq_num;
  rdma_mode_t mode;

  /* return */
  int rv;
  u32 sw_if_index;
  clib_error_t *error;
} rdma_create_if_args_t;

void rdma_create_if (vlib_main_t * vm, rdma_create_if_args_t * args);
void rdma_delete_if (vlib_main_t * vm, rdma_device_t * rd);

extern vlib_node_registration_t rdma_input_node;
extern vnet_device_class_t rdma_device_class;

format_function_t format_rdma_device;
format_function_t format_rdma_device_name;
format_function_t format_rdma_input_trace;
format_function_t format_rdma_rxq;
unformat_function_t unformat_rdma_create_if_args;

typedef struct
{
  u32 next_index;
  u32 hw_if_index;
  u16 cqe_flags;
} rdma_input_trace_t;

#define foreach_rdma_tx_func_error	       \
_(NO_FREE_SLOTS, "no free tx slots")

typedef enum
{
#define _(f,s) RDMA_TX_ERROR_##f,
  foreach_rdma_tx_func_error
#undef _
    RDMA_TX_N_ERROR,
} rdma_tx_func_error_t;

#endif /* AVF_H */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */